Construction Delay & Disruption Archives

Kandace Zimmerman

Kandace Zimmerman is a planning and scheduling professional with over 20 years of experience. She has been appointed as a technical expert on 26 occasions.

Kandace has testified in litigation and arbitrations, including delivering concurrent evidence. She has been the lead expert on numerous mediations and has produced expert reports for disputes with values of up to $35 million.

Kandace has a background in general contracting and insurance matters. Her project experience includes residential, education, commercial, high-rise, leisure, infrastructure, water and wastewater treatment facilities, industrial, and heavy civil work.

Kandace specializes in the analysis of complex delay and disruption matters. Her expertise ranges from construction management, labor productivity, and calculation of damages to scheduling and delay analysis and cost impact and disruption analysis.

Kandace holds a degree in mathematics. She is a member of the American Bar Association (on construction law) and the Association for the Advancement of Cost Engineering International.

Darcy Holderness

Darcy Holderness is a professional engineer with over 20 years of experience. He has been appointed as a technical expert.

Darcy has testified as an expert at arbitration regarding engineering and technical root cause determinations, and has assisted in two major arbitrations as a factual witness and proper officer. He has produced expert reports on disputes with values of up to $2 million.

Darcy has delivered nuclear power, fossil fuel, and renewable energy projects covering all aspects of utility power plants, including fuel and waste handling, steam and water cycles, heat rejection systems, water treatment, air handling, and HVAC. This includes over a decade of experience working with carbon capture, compression, transport, and storage systems. He has experience in siting power plants, initial project and organizational development, design review, contract negotiation and administration, construction oversight, commissioning, deficiency management, and operational support. 

Darcy specializes in disputes within the energy industry regarding major project delivery and engineering management. He has expertise in engineering standard of care, construction execution and oversight, and operational and maintenance planning.

Darcy holds a degree in mechanical engineering. He is a member of the Association of Professional Engineers Saskatchewan, the Project Management Institute, and the Canadian Nuclear Society.

Oguzhan Cinar

Oguzhan Cinar is a civil engineer with over 10 years of experience. He has been appointed as a quantum and delay expert and assisted the named expert on 15 occasions.

Oguzhan has acted as an expert in litigation and international arbitration proceedings, as well as a lead assistant in construction disputes. He has prepared expert reports on disputed projects with values of over $1 billion.

Oguzhan has hands-on experience as a civil and cost engineer on construction and infrastructure projects in Qatar, Tanzania and Turkey. He has assisted clients in addressing global settlement issues, conducting financial reporting, implementing earned value analysis, and managing activity and source-based progress and budgeting.

Oguzhan is engaged for both delay and quantum matters. He has expertise in delay analysis, application of various delay methodologies, as well as assessing in prolongation, disruption, final account, and abortive costs.

Oguzhan holds a master’s in construction project management, a bachelor’s degree in civil engineering, and an advanced professional award in expert witness evidence. He is a fellow of the Chartered Institute of Arbitrators, a member of the Chartered Institute of Building, and sits on the audit board and the academic and publications committee of the Society of Construction Law Turkey.

Andrew Merrilees

Andrew Merrilees is a Chartered Quantity Surveyor with over 30 years of experience. He has been appointed as a quantum and delay expert on more than 15 occasions.

Andrew Merrilees enjoys a fantastic reputation in the construction sector for his valuation of damages, with peers and clients recommending him as “a safe pair of hands and a steady witness”.

Lexology Index – Consulting – Construction – Quantum, Delay, and Technical

Andrew has testified in arbitration, litigation, mediation, adjudication, and provided support to dispute boards under the rules of SIAC, AIAC, HKIAC, DIAC, LCIA, and the courts. He has produced expert reports for disputes with values of up to $500 million.

Andrew has extensive experience in building and civil engineering projects, including construction management, design and build, and target cost contracts. He has led commercial and quantity surveying teams while interfacing and liaising with the employer’s representatives, design, architectural, and engineering consultants, construction and planning staff, and legal representatives.

Andrew specialises in expert witness and dispute avoidance involving complex claims and disputes across the construction, engineering and insurance industries. He has particular expertise in delay and disruption and quantum matters of loss and expense.

Andrew is dual-qualified, with qualifications in quantity surveying and law. He is a fellow of the Royal Institution of Chartered Quantity Surveyors, the Chartered Institute of Building, the Association for Project Management, the Chartered Institution of Civil Engineering Surveyors, the Association of Cost Engineers, and the Chartered Management Institute. Andrew is a member of both the Chartered Institute of Arbitrators and the Society of Construction Law, a practising member and accredited expert of the Academy of Experts, and a registered professional surveyor in Hong Kong.

Deviprasad Pentapati

Deviprasad Pentapati is a civil engineer with over 20 years of experience. He has been appointed as a technical expert and has been an assistant to the named expert on 15 occasions.

Deviprasad has supported with domestic and international arbitrations in federal and state court proceedings. He has assisted on matters in various alternative disputes resolution forums and authored expert reports on disputes with values of up to $1 billion.

Deviprasad has held roles on projects as a program controls director, senior project controls manager, senior scheduler, and a senior claims specialist. His industry experience includes airports, data centers and technology, transportation and infrastructure, grade separations, power plants, high-rise residential, commercial and mixed-use buildings, oil and gas infrastructure (refineries, pipelines), correctional facilities, water and wastewater treatment plants, wind farms, chemical and LNG plants.

Deviprasad specializes in critical path method scheduling, delay and disruption analysis, assessment of damages, analyzing productivity and inefficiencies, risk management, cost tracking and cashflow forecast, and change management. He has assisted clients on complex domestic and international disputes and has evaluated claims ranging from $5 million to $1 billion on disputed projects relating to light rail, transportation, power, buildings, pipelines, LNG plants, and chemicals.

Deviprasad is a professional engineer, a certified construction manager, a project management professional, a planning and scheduling professional, a risk management professional, and a certified occupational safety and health administration professional. He is a member of the Association for the Advancement of Cost Engineering, the Project Management Institute, and an active participant at the Design-Build Institute of America.

Thomas Moreno

Thomas Moreno is a certified construction inspector with over 25 years of experience. He has been appointed as a technical expert on 100 occasions.

Thomas has testified in arbitration and litigation, including delivering concurrent evidence (hot tubbing). He has prepared expert witness reports and worked closely with attorneys, legal support teams, and opposing experts regarding site inspections, defining scopes of repair, estimating costs, and facilitating settlement negotiations on disputes with values of up to $12 million.

Thomas has experience in change order management, request for information, request for proposal, and insurance property loss estimation using proprietary systems and CSI formats. He has managed multiple projects and design work and supervised large teams across the commercial, hospitality, multi-unit residential, and low-income housing sectors.

Thomas specialises in disputes regarding moisture intrusion, fenestration problems, structural damage and failure, and roofing, building envelope, and foundation defects. He has assisted clients on matters relating to construction defects, costs, scheduling, and contracts.

Thomas is a licensed general contractor, a licensed adjuster, a Haag certified roof inspector, and a certified mold inspector. He is a member of the Construction Specification Institute, the Western Construction Consultants Association, the Western Chapter of Engineers, and the Community Associations Institute.

Corrinne McLeish

Corrinne McLeish is a Chartered Quantity Surveyor with over 20 years of experience, including the last eight years spent in dispute resolution. She has been appointed as a quantum expert six times and has assisted the named expert on over 30 occasions.

Corrinne has been involved in arbitration, adjudication, litigation, and mediation proceedings. She has acted as lead assistant on projects with disputed values of up to £197 million.

Corrinne has live project experience in all aspects of commercial and contract management, which includes internal and external reporting of progress against contract, preparation of fully substantiated interim and final account submissions, reporting of site delays incurred, procurement of subcontractors, and valuation of variations. She has worked with building contractors, main contractors, and rail infrastructure providers across the buildings, transportation infrastructure, and power and utilities sectors.

Corrinne specialises in construction quantum expert witness services and is widely experienced in UK statutory adjudication. She has expertise in commercial and contract management, including internal and external progress reporting, preparation of substantiated interim and final account submissions, site delay reporting, subcontractor procurement, and valuation of variations and compensation events.

Corrinne holds a master’s in construction law, arbitration, and adjudication, along with a legal experience training advanced professional award in expert witness evidence. She is a fellow of the Royal Institution of Chartered Surveyors (RICS), a member of the Chartered Institute of Arbitrators (CIArb) and the Adjudication Society, and a senior associate of the Academy of Experts. Corrinne is an active committee member of the CIArb Scotland Branch and an ambassador for Science, Technology, Engineering, and Mathematics (STEM) and RICS Inspire initiatives.

Kadir Varol

Kadir Varol is a civil engineer with nearly 15 years of experience. He has been appointed as a delay and programming expert on two occasions and has assisted the named expert numerous times. 

Kadir has been involved in arbitration, litigation, and adjudication proceedings. He has assisted in analysing disputes and producing expert reports for hospitals, airports, infrastructure, power plants, and residential projects with disputed values of up to €2 billion.

Kadir has extensive on-site project experience ranging from airports, power plants, hydropower plants, a canal expansion, railways, tunnels, highways, and a desalination plant to hospitals, hotels, and high-rise buildings. He has worked across many global locations, including the Netherlands, Australia, Panama, Sweden, Slovakia, Oman, Turkey, Kazakhstan, Romania, Kuwait, Qatar, UAE, Russia, Uganda, and Tajikistan. 

Kadir specialises in delay and disruption analysis, prolongation cost calculation, price adjustment, programming, and construction management. He has expertise in determining project critical paths, and identifying project risks, and has undertaken expert witness roles in construction litigation cases in the Netherlands. 

Kadir is dual-qualified in construction law and civil engineering and is a project management professional with the Project Management Institute. He holds an advanced professional award in expert witness evidence and is a member of the Chartered Institute of Arbitrators and the Royal Institution of Chartered Surveyors. Kadir is bilingual in English and Turkish.

Ali Cherri

Ali Cherri is a civil engineer with over 10 years of experience. He has been appointed as a delay expert and has assisted the named expert on more than 15 occasions.

Ali has acted as the lead delay assistant to the testifying expert in arbitration and litigation and has attended multiple hearings. His engagements have covered construction project matters across the Middle East and North America, with disputed values of up to $40 million.

Ali has experience working both on-site and within an office for contractors and consultants. He has assisted clients with project management and claims services.

Ali specializes in critical path and delay analyses and can analyse, simplify and present complex construction dispute matters by using concise visual representations to arrive at clear conclusions. He has provided expert witness services and delay analysis work for major construction projects across infrastructure, high-rise buildings, schools, hospitals, mining refineries, and marine.

Ali holds a degree in civil engineering with a specialization in project management. He is a member of the Order of Engineers of Quebec, Canada, and is fluent in English, French and Arabic. 

Mark Boehm

Mark Boehm is a construction professional with over 20 years of experience. He has assisted the named expert on ten occasions.

Mark has assisted in quantum and delay matters at litigation, arbitration and adjudication. He has prepared expert reports on disputed projects with values of up to $18.5 billion.

Mark has hands-on site experience in delivering projects. He has delivered major projects across various industries, including power generation, mining and resources, and commercial and luxury residential construction.

Mark’s expertise includes actual cost reconciliation, assessment of reasonable costs, measured mile analysis, and forensic delay analysis. He has supported clients by providing opinion on entitlement and valuation of associated damages.

Mark holds a degree in construction management and is working towards a master’s in construction law. He is a registered building practitioner with the Department of Mines, Industry Regulation and Safety in Western Australia.

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